Upgrade to v0.21.5 of global-jjb

Change-Id: Ief37087319b093e872dea519537e86aa48ee6ffc
Signed-off-by: Andrew Grimberg <agrimberg@linuxfoundation.org>

diff --git a/jjb/global-jjb b/jjb/global-jjb
index f58aa56..10f2c5c 160000 (submodule)
--- a/jjb/global-jjb
+++ b/jjb/global-jjb
@@ -1 +1 @@
-Subproject commit f58aa56acc44a8eb7498af10e5d229e1690e58b0
+Subproject commit 10f2c5c4799680c148a73ba4af81c6f220a041cc